Before your comment the discussion was about comparing the price of renewables to that of fossil fuel plants, specifically it got onto the discussion of peaking

Before your comment the discussion was about comparing the price of renewables to that of fossil fuel plants, specifically it got onto the discussion of peaking power plants. If you wish to change the topic to base load, then you're going to have to make that clear. As for night time, see my comment about storage; build out pumped hydro or dam-based hydro and use it as your battery. When you inevitably have excess solar/wind during the day pump water uphill, and/or decrease you hydro production rate, and then at night time use that pumped storage and/or increase the rate at which you run water through your turbines. If a particular region doesn't believe that it's realistic for them to do this, or show that nuclear will be cheaper, then build that.